Craftsman
Gas Walk-Behind Mower

Model #917378340 Official Craftsman lawn mower

Here are the diagrams and repair parts for Craftsman 917378340 lawn mower, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Showing 10 of 245 parts

Lawn Mower Lock Nut, 3/8-in (replaces 409149, 532409148)#31

Wheels/tires/bag Diagram

Pipe fitting

Part #132010
Replaced by #532409149
?
Manufacturer substitution
This part replaces 132010. Substitute parts can look different from the original.
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Lawn Mower Lock Nut, 3/8-in (replaces 409149, 532409148)#26

Rotary lawn mower Diagram

Lock nut

Part #83923
Replaced by #532409149
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Manufacturer substitution
This part replaces 83923. Substitute parts can look different from the original.
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Lawn Mower Lock Nut, 3/8-in (replaces 409149, 532409148)#9

Wheels/tires/bag Diagram

Hex flange lock nut

Part #145212
Replaced by #532409149
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Manufacturer substitution
This part replaces 145212. Substitute parts can look different from the original.
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Lawn & Garden Equipment Engine Oil, SAE 30, 20-oz (replaces 33000)

#(NI)

All parts Diagram

Lawn & garden equipment engine oil, 20-oz

Part #33000
Replaced by #40020
?
Manufacturer substitution
This part replaces 33000. Substitute parts can look different from the original.
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$3.94 | 
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MSRP: $5.49
Lawn Mower Blade (replaces 594893001)#47

Rotary lawn mower Diagram

Belt, 21-in

Part #175064
Replaced by #532406712
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Manufacturer substitution
This part replaces 175064. Substitute parts can look different from the original.
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Lawn Mower Handle Knob (replaces 180453, 189713X418, 442571X428)#6

Rotary lawn mower Diagram

Handle knob

Part #136376
Replaced by #532185577
?
Manufacturer substitution
This part replaces 136376. Substitute parts can look different from the original.
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Lawn Mower Drive Wheel, 8 x 2-in (replaces 180767, 532180775, 5321807-75)#11

Wheels/tires/bag Diagram

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Lawn & Garden Equipment Hex Head Bolt, 3/8-24 x 1-1/8-in (replaces 5328510-84, 851084)#50

Rotary lawn mower Diagram

Lawn & garden equipment screw

Part #851084
Replaced by #532435345
?
Manufacturer substitution
This part replaces 851084. Substitute parts can look different from the original.
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Lawn Mower Bolt (replaces 191574)#5

Rotary lawn mower Diagram

Handle bolt

Part #131959
Replaced by #532191574
?
Manufacturer substitution
This part replaces 131959. Substitute parts can look different from the original.
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Lawn Mower Zone Control Cable (replaces 156581, 532156581, 5321565-81, 5321685-52)#4

Rotary lawn mower Diagram

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$19.79 | 
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Was: $21.99

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

March 1, 2016
By Lyle Weischwill
How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cracked.

Repair difficulty
Time required
 15 minutes or less